hi. congrats.

dress code should be still office wear. The site visit is for you to look around your location of work and meet your potential colleagues and get introduced to your job scope and unit function.

at this stage, probably will have a few shortlisted, possibly 2-3?. this is in case that their first choice dont want this job due to whatever reasons... i.e location too ulu, dont like the office, alr have better offers, etc.

for me, i was more direct. i asked my boss if i was the only one shortlisted and if i am the first choice. apparently i was the only one invited.